Return-feed attachment for woodworking-machines.



C. A. DALEY 6L J. LYNDALE.

RETURN FEED ATTACHMENT FOR WOODWORKING MACHINES.

APPLICATION FILED 1UNE5. |911.

1,288,84 Patented De0.24,1918.

4 SHEETS-SHEET I.

@XM1/memo mi W l @tto/Lne C. A. DALEY &1. LYNDALE.

RETURN FEED' ATTACHMENT FOR lwooDwoRKTNG MAcHmEs.

APPLICATION FILED IUNE 5. 19|?,

L288,845 Patented Dec. 24, 1918.

4 SHEEIS-SHEEI' 3.

C. A. DALEY 6L l. LYNDALE.

RETunN FEED ATTACHMENT Foa woonwoRNTNG MACHINES.

APPLICATION FILED lUNE 5. lgl. 288,45. Patented Dec.. 24, 1918.

4 SHEETS-SHEET 4.

QJ. Ly/Edd e nNrr-nn sanare emana ernia CHARLES A.' DALEY AND JOHN LYNDALE, oir MINNEAPOLIS, MINNESOTA; SAID DALEY i ASSIGNOR 'OF ONE-HALF OF THE WHOLE RGI-IT T0 ROBERT H. CARLSON, OF MINNE- APOLIS, MINNESOTA.

Lasagna.

Specification of Letters Patent.

Patented Dec. 2a, 31918.

Application filed June 5, 191:'. serial No. 172,967.

invented new and useful Improvements in Return-'Feed Attachments for Woodwork-` ing-Machines, of which the following is a specification.

This invention relates to wood working machines such as jointers and the like and it has for its object to provide a device which may be described as areturn feed attachment whereby the planks or pieces of material operated upon will be automatically returned to the jointer or other machine to which the present invention forms an attachment.

A further object of the invention is to produce a return feed attachment of simple and improved construction including means whereby the plank will be automatically reversed or turned .over before being returned to the jointer or other machine.

lVith theseand other ends in view which will readily appear as the nature of the invention. is better understood the same consists in the improved construction, arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claims.

in the accompanying drawings has been illustrated a simple and preferred form of the invention; it being understood thatno limitation is necessarily made to the precise structural details therein exhibited but that changes, alterations and modifications withn in the scope of the appended'claims may be resorted to when desired.

1n the drawings.

Figure 1 is a side elevation of a device constructed in accordance with the invention.

Fig. 2 is a top plan view of the saine.

Fig. 3 is a bottom plan view, the legs or Supports being shown in section.

Fig. a is a longitudinal vertical sectional view taken on the line 4 4 in Fig. 2.

Fig. 5 is a sectional detail view taken on the line 5 5 in Fig. 2.

Fig. 6 is a'sectional detail view taken on the line 6 6 in Fig. 2 and showing the dog in an intermediate position between the liin its of its movements, and a portion of a plank engaging the same.

Fig. 7 is a sectional detail view taken on the line 7 7 in Fig. 3.

Fig. 8 is a perspective view of the timer, the component parts thereof being separated.

Fig. 9 is a transverse sectional view taken on the line 9 9 in Fig. 3, and showing a plank on the table ready for turning.

Fig. 10 is a transverse sectional view similar to Fig. 9 and showing the plank turning table raised and the plank turned.

Fig. 11 is a sectional detail view taken on the line 11- 11 in Fig. 2.

Corresponding parts in the several figures are denoted by like characters of reference.

The bed frame A which is supported on legs 1 5, includes side members 16 on which longitudinal guide flanges 17 are adjustably mounted, said guide flanges having been shown as being provided with lugs 18 having slots 19 engaged by clamping screws 20. While the distance between the guide flanges 17 may be varied, said Hanges are to be always preserved in substantially parallel relation to each other and also to the side walls 21 of a casing C supported at the front end of the frame, this being the end at which planks are initially received from the jointer or other machine and at which said planks are subsequently discharged in the direction of such machine.

The casing C has an end wall 22supporting a crosshead 23 adording bearings for a driving shaft 24C and a main operating shaft 25 which latter receives motion from the driving shaft 24C by suitable transmission means such as gear wheels 2G, 27 both meshing with an intermediate idler 28. The shaft 24 may be driven from any convenient source'of power, such as a moving part of the jointer or other machine not shown, to which the present invention forms an attachment.

The shaft 25 carries a feed drum 28 the face of which is provided with spikes 29 that project at diametrically opposite sides through siots 30 in the side walls 21 of the casing C. The guide fianges 17 are provided at diametrically opposite sides of the feed drum 28 with slots 31 for the accommodation of presser wheels 32 which are supported for rotation on pivoted arms 33 which, by springs 34, are pressed in thel direction'ofthe feed drum, thereby causing material such as planks passing between the guide flanges 17 and the side walls 21 to be forced resiliently in the direction of the latter and of the feed drum by the spikes of whichv the material will been-' 35 and 36 as best seen in Fig. 2, thelpas# sage Qway 35v being the `one in which material is receivedas it lcomes fromvthe jointer or other -machine and the passageway 36 being the one through which material is discharged in the direction of the jointer after having been subjected to the operation of the present machine. These passage ways may be regarded as extending the full length of the machine, as do the flanges 17, said passage wa s being bounded only for a portion of their respective lengths by the side walls 21.

The bottom of the passage way 35 is provided with a .longitudinal slot 37 the side lWalls of which. are provided With'recesses forming spaced enlargements or openings 38, 39. This slot with its enlargement is for the accommodation of a reciprocatory slide or carriage'whch will for convenience be called the dog D and which comprises a.

body member or plate-'40 having perforated ears or lugs 41 whereby it is slidably mountled on the vtrack bar or rod 42, said body member serving to support a dog 43 which is pivotall connected therewith by a pin or pivot mem er 44. The dog 43 has a head 45 which is considerably wider thanthe body of the dog but which is capable 4of passing through the enlarged portions 38, 39 of the slot 37. Said do is also provided with stop members 46, 4 adapted to limit the pivotal movement thereof by engagements respectively with the body member 40 and with the end face of one of the ears or lugs 41, see dotted lines in Fig. 5. The dog 43 is also provided with va laterally extendlng lip or flange 48 for engagement with the actuating springs 49, 50, the latter being curved springsA which are supported adjacent to the ends of the slot 37 and which. extend in the direction of each other as best seen in Figs. 5 and 6. The spring 49 normally engages the flange 48,

i thus supporting lthe dog 43 .with its head 45 rojectin u W-ardl through the enlarged gortion 3% o? the sldt 37, and in the path of material coming from the jointer, in which position thetimer D is normally sustained y the action of a retracting member such as a Weight 51 which is connected with the timer by a suitable guide flexible element or cord 52.

Laage Between the sidemembers 16 of the bed frame in rear ofthe casing C-there is a rec-- tangularopening53 which is normally obstructed by a plate or table 54 which is connected with one of the side members, adjacent to the passage way 36, by means .of hinges 55, enabling said table to tilt up w'ardly5 as clearly seen in Fig. 10 of the drawings. The tilting mechanismv of the table includes a resilient'armv or bar 56 one end of which is firmly secured to the under side of one of the Aframe members 16 adjacent tothe free edge of the table, the free block 57 on the under side of the table 54 adjacent to the hinged edge thereof. Itis obvious that pressure i'n an' upward direction exerted on the resilient arm 36 will serve to tilt the table 54 to the position shown in Fig. 10. `For the purposy of automatically restoring the table 54 to a closed position, the under side of said talile is provided with an arm 88 carryi'nga weight 87. To actuate the arm 56 the following instrumentalities are provided:

Supported for rotation beneath the bed frame and below thetable 54 ,is a shaft 58 having at one` end a bevel pinion 59 meshing with a bevel gear 60 carried by the shaft 25 below the feed drum 28. The shaft 58 which is lthus constantly driven when the machine is in operation, carriesa'dentate wheel 61, which is fixed thereon, said dentate wheel being adapted for engagement with a spring actuated pawl or dog 62l which is pivoted on a ange 63 extending from an eccentric cam 64 which is loosely molllltedlon the` shaft 58,

. the latter being provided with a set collar 65 to limit the endwise movement of the eccen-. tr1c cam. The tendency of the actuating -spring 66 is to maintain the dog 62 in engagement with the dentate wheel 61. The dog however is provided with a lip 67 lying in the path of a stop member which consists of a rod v68 carried by a slide 69 which is normally actuated in the direction of the dog carryin flange 63 by means of a spring 70. The sli e,69 may be retracted against. the tension of the spring 70 by meansof a lever 71 fulcrumed at 72, said lever having a slot 73 engaging a pin 74 that projects from the slide 69 and said lever having an arm 75 provided with a'keeper 76 engaginga pin or stud 77 that projects from. a longitudinal slidable rod 78 one end ofl which as will be best seen in Fig. 3, is disposed in the path ofthe dog D.

A transverselydisposed shaft 79 is provided with a bevel pinion 80 .meshing with the bevel gear 60 whereby the shaft 79 will be constantly driven when the machine is in operation. rlhe` shaft 79 carries a pulley l81 over which is trained an endless `conveyer 82, said conveyer bein also guided over an idler 83, the upper lea of said conveyor being end of said resilient arm bearing against a aaeaeee terial such as a plank moving in the passageway, sa-id ledge 84 extending over the enlarged portion 37 as far as may loe-desired. One of the frame members 16 is provided, adjacent tothe front edge of the ledge 84, with a small supporting plate 85, lying in the same horizontal plane as the ledge 84, and conerating with the latter to temporarily support the plank passing through the passage way 35. Itwill be read1ly under stood that as soon as such plank passes out 4 of engagement with the supporting member 85, it will gravitationally tilt and fall from the ledge 84 upon the table 54 where it will be momentarily supported. It will of course be premised that the plank or piece of material coming from the jointer or other machineis standing lon one edge as it passes through the passage way 35.- As it drops on the table 54 it will lle on one side, and when said table is uptllted the plank will again be placed on edge on the' endless conveyer 82, it having been inverted by the tilting operation as described.

. .Fromthe foregoing description taken in connection with the drawings hereto annexed the operation and advantages of this invention will be readily understood. A plank entering the passage way 35. at the .front end of the machine will strike the head of the dog which projects upwardly through the enlarged portion 38 of the slot 37 in which position the head is normally held by action of the spring 49 agalnst the flange 48 of the dog 43. As the plank is moved along the passage way by the drum 28, the dog is carried forward along with it, the flange '48 beingengaged by the Spring 50 whereby downward pressure is exerted on the dog, the latter being tilted'downwardly until the head 45 passes through the enlarged portion 39 of the slot 37. That portion of the bottom member of the passage way which extends between the openings 38 and 39 is terminally beveled as seen at 86 in Fig. 5, permitting the head 45 to slide beneath said bevel ended portion, thedog being retracted by the weight 51, until the head l45 lies beneath the opening 38, the flange 48 being engaged by the spring 49 the tension of which is exerted upwardly thereagainst. Thus the dog moves forward and down then rearward and up. rlhe dog 43 will not however be restored to its initial position until the plank passes beyond the opening 38 and out of the path ofthe head 45 which will now be projected upwa-rdly by the action of the spring 49. The plank will be moved by the feed wheelin a rearward 4direction until it rests on the ledge 84 and the supporting member 85,`and in this position it'will remain until the second plank enters" the machine when the first will be pushed out of engagement with the supporting member 85 and will tilt or drop sidewise on the table`54. At the same moment the rod 78 will be engaged by the dog and moved longitudinally in a rearward direction thereby actuating the lever 71 whereby the slide 69 is retracted against the :tension. of the spring 70. The stop member 68 will thus -be moved out of the path of the spring actuated dog 62 which latter will instantly engage the ratchet wheel 61, thus causing the cam member 64 to be carried around with the wheel 61 about the axis of the shaft 58. .During the' period of rotation the cam member 64 will exert upward pressure against the resilient arm 56 whereby the table 54 will be tilted upwardly to depos1t the .plank in an inverted position on the endless conveyer 82. As the cam member 64 passes out of engagement with the resilient arm 56 the'table 54 will be restored to its initial position by the weight 88 and will thus be ready for a repetition of the operation while the inverted plank is carried by the conveyer 82 into engagement with the feed drum 28 by the action of which it is discharged.

vHaving thus described the invention what is claimed is 1. A bed frame having longitudinal passage ways at the two sides thereof, a tilting table intermediate said passage ways to transfer material from one passage way to the other, upright flanges constituting the outer 51de walls of the passage ways, means for conveying material in opposite direc- Y tions through the opposite ways, and a narrow ledge mounted o n the side wall of the passage way adjacent to the free edge of the table.

2. A. bed frame having lon 'tudinal passage ways at the two sides 't ereof, means for conveying material in opposite directions through the two passage ways, a tilting table hinged adjacent to one passage way and having a free edge supported adjacent to the other passage way, upright flanges constituting the outer side walls of the two passage ways, a narrow ledge supported on the side wall adjacent to the free edge of the table to aord a partial support to material in the passage way, and a supportin member adjacent to and spaced from t e ledge at the receiving end of the latter said supporting member being of small extent so that material passing out of engagement therewith will drop gravitationally on the ledge of the table.

3. A bed frame having longitudinal passage ways at the two sides thereof, means for conveying material in opposite directions through the two passage ways, a tilting table hinged adjacent to .one passage way and having a free edge supported adjacent to the other passage way, upright anges constituting the outer side walls of the two passage ways, a narrow ledge supported on the side wall adjacent to the free edge of the table to afford a partial support to-material in the passage way, and a suppgrting member adjacent to and spaced from the ledge at the receiving end of the i latter said supporting member being of small extent so that material passing out of engagement therewith will drop gravita-v tionally on the ledge of the table; in combination with means whereby the table will be tilted at stated intervals to transfer material deposited thereon to the passage way adjacent to the hinged edge of the table.

4. A bed frame having longitudinal passage ways at the two sides thereof, means for conveying material in opposite directions through. the two passage ways, a tilting table hinged adjacent to one passage way and having a free edge supported adjacent to the other passage ways, upright flanges constituting the outer side walls of the two passage ways, a narrow ledge supported on the side wall adjacent to the free edge of the table to aord a partial support to material in the passage way, and a supporting member adjacent to and spaced from the ledge at the receiving end of the latter said supporting member being of small extent so that material passing out of engagement therewith will drop gravitationally on the ledge of the tablet; in combination with means whereby the table will be tilted at stated intervals to transfer ma-v terial deposited thereon to the passage way adjacent to the hinged edge of the table, and a driven endless conveyer operating in the last mentioned passage way.

messes 5. Anbed frame having longitudinal pas l sage ways at the two sides thereof, a tilting tilting lmeans for the table including a bear- -lng block on the under side adjacent to thehinged edge thereof, a securely supported resilienty arm engaging said bearing block, a cam supported for rotation and' adapted to engage the resilient arm and means for actuating said cam at stated intervals.

6. A bed'frame having longitudinalpassage ways at the two sides thereof, a tilting table arranged intermediate the passage ways and hinged adjacent to one passage way, a feed drum for feeding material in opposite directions in the two passage ways, tilting means for the table including a bearing block on the underside adjacent to the hin ed edge thereof, a securely supported resi ient arm engaging said bearing block, a cam supported .for rotation and adapted to engage the resilient arm. and means forincluding a tri-p device and a timer actuating the same.

A bed frame having longitudinal passage ways at the two sides thereof, a tilting tablel arranged 4intermediate the. passage ways and hinged adjacent to one passage way, a feed drum for feeding material in opposite directions in the two passage ways, tilting means for the table including a bearing block on the under side adjacent to the hinged edge thereof, a securely supported resilient arm engagingvsaidbearing block, a cam supported for rotation and adapted to engage the resilient arm and means for including a trip device and a timer actuating the same; said table being provided with a. weight carrying arm to restore it gravitationally to initial position after being tilted upwardly.

In testimony whereof we tures,

CHARLES A. DALEY. JOHN LYNDALE.

aiiiX our signa- 

